Thermal decomposition of Cu(II)-bis(8-hydroxy-5-quinolyl)methane coordination polymer

The volatile products formed when the coordination polymer of copper(II) and bis-(8-hydroxy-5-quinolyl)methane was heated in vacuum at elevated preselected temperatures were examined. The amount of weight loss at each temperature was determined with a recording thermal balance at each fixed temperature. Infrared spectrophotometry was used to aid in the identification of the major volatile component. A sample was pyrolyzed directly into the mass spectrometer. The results show that the volatile product is for the most part the organic ligand bis(8-hydroxy-5-quinolyl)methane and not derivatives of the copper complex or fragments of the ligand. The mechanism for the decomposition previously proposed is supported.